U+2209

Not element of∉

Not element of is a monochrome text character from the Unicode Mathematical Operators block, listed here under Math. Copy it with one click, or use the hex, octal, decimal and HTML entity codes below to embed it in web pages, code, and documents.

Quick facts

Unicode
U+2209
Decimal
8713
Hex
0x2209
Octal
0o21011

Unicode identity

FormatValueCopy
Code pointOfficial Unicode notationU+2209
Official nameUnicodeData.txt, Unicode 18.0.0NOT AN ELEMENT OF
DecimalBase 108713
HexadecimalBase 160x2209
OctalBase 80o21011
BinaryBase 20010001000001001
General categorySymbol, mathSm
Unicode blockU+2200–U+22FFMathematical Operators
PlaneBasic Multilingual Plane (BMP, Plane 0)

HTML & CSS

FormatValueCopy
HTML entity (decimal)∉
HTML entity (hex)∉
HTML entity (named)∉
CSS content escapeUse inside content: "…"\2209
URL encodedPercent-encoded UTF-8%E2%88%89

Programming languages

FormatValueCopy
JavaScript / TypeScript\u2209
JSONUTF-16 surrogate pairs\u2209
Python\u2209
Java / C# / Kotlin\u2209

Byte encodings

FormatValueCopy
UTF-83 bytesE2 88 89
UTF-16 (BE)2209
UTF-32 (BE)00002209

How to type Not element of

  • Windows

    Hold Alt and type +2209 with the hex numeric keypad option enabled, or type 2209 then press Alt+X in Word and most Office apps.

  • macOS

    Enable the Unicode Hex Input keyboard, hold Option, and type 2209. Or open Character Viewer (Control+Command+Space) and search "Not element of".

  • Linux

    Press Ctrl+Shift+U, type 2209, then press Space or Enter in GTK apps. IBus and most terminals support the same sequence.

  • HTML, CSS & code

    Paste the character directly, or use the escapes above: ∉ in HTML, \2209 in CSS, and \u2209 in JavaScript.

Official Unicode reference

Character name
NOT AN ELEMENT OF
Block
Mathematical Operators (U+2200–U+22FF)
General category
Sm — Symbol, math

Data from the Unicode Character Database, version 18.0.0. See the official code chart for the Mathematical Operators block: U2200.pdf (PDF, unicode.org).

Frequently asked questions

How do I copy the Not element of symbol?

Click the Copy button at the top of this page, or select ∉ and press Ctrl+C (Cmd+C on Mac). It is plain Unicode text, so it pastes into documents, chats, code, and design tools.

What is the Unicode code point for Not element of?

Not element of is U+2209 (decimal 8713, hexadecimal 0x2209, octal 0o21011). It lives in the Mathematical Operators block (U+2200–U+22FF) of the Basic Multilingual Plane (BMP, Plane 0).

What is the official Unicode name of Not element of?

The Unicode Standard (version 18.0.0) names this character "NOT AN ELEMENT OF". Its General_Category is Sm (Symbol, math).

What is the HTML code for Not element of?

Use ∉ or ∉, or the named entity ∉. In CSS, use content: "\2209".

How do I type Not element of in code?

JavaScript: "\u2209". Python: "\u2209". JSON and Java: "\u2209". The UTF-8 byte sequence is E2 88 89.

Is Not element of an emoji?

No. Not element of is a text symbol and renders as a monochrome glyph in the current font. Some platforms may offer an emoji variant when U+FE0F is appended.

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